4 - Sensation & Perception

4 - Sensation & Perception - Sensation Perception...

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Sensation : Perception :
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Sensation Perception Too much information! Absolute threshold Sensory adaptation Habituation Novel stimuli Signal detection theory (relevance, importance) Difference Threshold (just noticeable difference)
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Retina Cones: Strong visual acuity Fovea: Rods: Lower visual acuity
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Color Vision Color depends on wavelength of light Light reflects off objects Black absorbs all light White reflects all light Primary colors
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Theories of Color Vision Trichromatic Theory Three types of receptors Differential firing in each of these types of receptors causes color sensation Colorblindness: Doesn’t explain everything, though…
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Afterimages 3 groups of receptors Excitation / Inhibition Excites one part of receptor and inhibits complementary part Opponent Process Theory
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Three types of cones Red Green Blue
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4 - Sensation & Perception - Sensation Perception...

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